Rating: 

Regular Expressions is basically the same across most languages (some variations as how you use it and terminology differences too), whether it may be C#, Javascript, PHP, Ruby, Python, TCL, Perl, or JAVA. This is amazing and should be used as an hand book for students and beginning to intermediate developers. As the book is in third edition some basics of the programming languages are expected to be know by its readers. Overall its a good book and worth a reading.